diff --git a/app/config.json b/app/config.json
index d7aee4f..fcd25c4 100644
--- a/app/config.json
+++ b/app/config.json
@@ -58,7 +58,7 @@
       }, {
         "key": "instance_class",
         "label": "Instance Class",
-        "description": "The instance type for the cluster to run, such as high performance, high performance plus",
+        "description": "",
         "type": "integer",
         "default": 0,
         "range": [0, 1],
@@ -100,7 +100,7 @@
       }, {
         "key": "instance_class",
         "label": "Instance Class",
-        "description": "The instance type for the cluster to run, such as high performance, high performance plus",
+        "description": "",
         "type": "integer",
         "default": 1,
         "range": [0, 1],
@@ -156,7 +156,7 @@
       }, {
         "key": "instance_class",
         "label": "Instance Class",
-        "description": "The instance type for the cluster to run, such as high performance, high performance plus",
+        "description": "",
         "type": "integer",
         "default": 0,
         "range": [0, 1],
@@ -196,7 +196,7 @@
       }, {
         "key": "instance_class",
         "label": "Instance Class",
-        "description": "The instance type for the cluster to run, such as high performance, high performance plus",
+        "description": "",
         "type": "integer",
         "default": 0,
         "range": [0, 1],
diff --git a/app/locale/zh-cn.json b/app/locale/zh-cn.json
index cc8de9e..4bb8898 100644
--- a/app/locale/zh-cn.json
+++ b/app/locale/zh-cn.json
@@ -7,7 +7,6 @@
     "Memory": "内存",
     "Memory of each node (in MiB)": "每个节点的内存",
     "Instance Class": "实例类型",
-    "The instance type for the cluster to run, such as high performance, high performance plus": "性能型主机或超高性能型",
     "Node Count": "节点数量",
     "Number of nodes": "节点数量",
     "Volume Size": "挂盘容量",